On Thu, 12 May 2011 03:05:09 -0700 (PDT) in mj wrote:

I think it is hollow to the tip. The root goes very deep, like 8 plus
inches. I have been digging around each piece of grass and trying to
get all the roots. Sometimes when I dig up one "grass" there are
several moor bent in the ground just waiting to pop up. I have been at
this for a while now and I do think I am making progress but it sure
is frustrating. Because they don't show up in "clusters" I don't think
anything but pulling will help.
I have wondered if I have gotten too close to the plants roots and
maybe I am disturbing them. I am trying to be careful. With
everyone's input I think I am just being impatient. I can't bring
myself to start a thread about my tomato plants already starting to
wilt. Stay Tuned, this will be the third year in a row for that. Good
thing I am determined !!

Sounds like nudsedge and you're just encouraging it to put out
more "nuts" which become new plants.